<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">

<title>iScroll demo: probe</title>

<script type="text/javascript" src="../../build/iscroll-probe.js"></script>
<script src="http://cdn.bootcss.com/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">

var myScroll;
var position;
var loadingStep = 0;//加载状态0默认，1显示加载状态，2执行加载数据，只有当为0时才能再次加载，这是防止过快拉动刷新  
var loadingType = 0;//加载类型 1下拉刷新 2上拉加载更多
var pullDown, pullUp,pullDownLabel,pullUpLabel,contentUl;

function updatePosition () {
	position.innerHTML = (this.y>>0) +"||"+this.maxScrollY;
}

function loaded () {
	position = document.getElementById('position');
	pullDown = document.getElementById('pullDown');
	pullUp = document.getElementById('pullUp');
	
	pullDownLabel = document.getElementById('pullDownLabel');
	pullUpLabel = document.getElementById('pullUpLabel');
	contentUl = document.getElementById('contentUl');
	
	
	myScroll = new IScroll('#wrapper', { probeType: 3, mouseWheel: true });

	myScroll.on('scroll', function(){
		if(loadingStep==0){
			if(this.y>5){//下拉距离超过5
				pullDownLabel.innerHTML = "松开刷新";
				loadingType = 1;
				loadingStep=1;
			}else if(this.maxScrollY-this.y>5){//上拉距离超过5
				pullUpLabel.innerHTML="松开加载更多";
				loadingType = 2;
				loadingStep=1;
			}
			
		}
	});
	myScroll.on('scrollEnd', function(){
		if(loadingStep==1){//
			if(loadingType==1){
				pullDownLabel.innerHTML = "加载中...";
				pullDownAction();
				myScroll.refresh();  
			}else if(loadingType==2){
				pullUpLabel.innerHTML= "加载中...";
				pullUpAction();
				myScroll.refresh();  
				myScroll.scrollTo(0, this.maxScrollY);
			}
		
		}
	});
}

document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false);

//下拉事件
function pullDownAction(){
	
	$("#contentUl").prepend("<li>下拉刷新1</li><li>下拉刷新2</li><li>下拉刷新3</li>");
	
	pullDownLabel.innerHTML = "下拉刷新";
	loadingStep=0;
	loadingType=0;
}
//上拉事件
function pullUpAction(){
	
	$("#contentUl").append("<li>上拉显示更多..1</li><li>上拉显示更多..2</li><li>上拉显示更多..3</li>");
	
	pullUpLabel.innerHTML= "上拉显示更多...";
	loadingStep=0;
	loadingType=0;
}

</script>

<style type="text/css">
* {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

html {
	-ms-touch-action: none;
}

body,ul,li {
	padding: 0;
	margin: 0;
	border: 0;
}

body {
	font-size: 12px;
	font-family: ubuntu, helvetica, arial;
	overflow: hidden; /* this is important to prevent the whole page to bounce */
}

#wrapper {
	position: absolute;
	z-index: 1;
	top: 0;
	bottom: 0;
	left: 0;
	width: 50%;
	background: #ccc;
	overflow: hidden;
}

#scroller {
	position: absolute;
	z-index: 1;
	-webkit-tap-highlight-color: rgba(0,0,0,0);
	width: 100%;
	-webkit-transform: translateZ(0);
	-moz-transform: translateZ(0);
	-ms-transform: translateZ(0);
	-o-transform: translateZ(0);
	transform: translateZ(0);
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	-webkit-text-size-adjust: none;
	-moz-text-size-adjust: none;
	-ms-text-size-adjust: none;
	-o-text-size-adjust: none;
	text-size-adjust: none;
}

#scroller ul {
	list-style: none;
	padding: 0;
	margin: 0;
	width: 100%;
	text-align: left;
}

#scroller li {
	padding: 0 10px;
	height: 40px;
	line-height: 40px;
	border-bottom: 1px solid #ccc;
	border-top: 1px solid #fff;
	background-color: #fafafa;
	font-size: 14px;
}

#monitor {
	position: absolute;
	left: 51%;
}

#pullDown, #pullUp{
   text-align: center;
}

</style>
</head>
<body onload="loaded()">

<div id="monitor">Y position: <strong id="position">0</strong></div>

<div id="wrapper">
	<div id="scroller">
	            <div id="pullDown" class="ub ub-pc c-gra">  
                <div class="pullDownIcon"></div>  
                <div id="pullDownLabel">下拉刷新</div>  
            </div>  
		<ul id="contentUl">
			<li>Pretty row 1</li>
			<li>Pretty row 2</li>
			<li>Pretty row 3</li>
			<li>Pretty row 4</li>
			<li>Pretty row 5</li>
			<li>Pretty row 6</li>
			<li>Pretty row 7</li>
			<li>Pretty row 8</li>
			<li>Pretty row 9</li>
			<li>Pretty row 10</li>
			<li>Pretty row 11</li>
			<li>Pretty row 12</li>
			<li>Pretty row 13</li>
			<li>Pretty row 14</li>
			<li>Pretty row 15</li>
			<li>Pretty row 16</li>
			<li>Pretty row 17</li>
			<li>Pretty row 18</li>
			<li>Pretty row 19</li>
			<li>Pretty row 20</li>
			<li>Pretty row 21</li>
			<li>Pretty row 22</li>
			<li>Pretty row 23</li>
			<li>Pretty row 24</li>
			<li>Pretty row 25</li>
			<li>Pretty row 26</li>
			<li>Pretty row 27</li>
			<li>Pretty row 28</li>
			<li>Pretty row 29</li>
			<li>Pretty row 30</li>
			<li>Pretty row 31</li>
			<li>Pretty row 32</li>
			<li>Pretty row 33</li>
			<li>Pretty row 34</li>
			<li>Pretty row 35</li>
			<li>Pretty row 36</li>
			<li>Pretty row 37</li>
			<li>Pretty row 38</li>
			<li>Pretty row 39</li>
			<li>Pretty row 40</li>
			<li>Pretty row 41</li>
			<li>Pretty row 42</li>
			<li>Pretty row 43</li>
			<li>Pretty row 44</li>
			<li>Pretty row 45</li>
			<li>Pretty row 46</li>
			<li>Pretty row 47</li>
			<li>Pretty row 48</li>
			<li>Pretty row 49</li>
			<li>Pretty row 50</li>
		</ul>
		<div id="pullUp">  
                <div class="pullUpIcon"></div>  
                <div id="pullUpLabel">上拉显示更多...</div>  
         </div> 
	</div>

</div>

</body>
</html>